package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * ClassName: EmployeeController
 * Package: com.itheima.reggie.controller
 * Description:
 *
 * @Author www.youkewang.top
 * @Create 2023-10-21 17:53
 * @Version 1.0
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /*
     * 员工登录
     * */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        // 1、将页面提交的密码进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        // 2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        // 3、如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("登录失败");
        }

        // 4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        // 5、查看员工状态，如果已经禁用，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        // 6、登录成功，将员工id存入Session并且返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工登录退出
     *
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        // 清理session中保存的当前员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     *
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工, 员工信息: {}", employee.toString());
        // 设置初始密码123456并且做MD5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        // 设置对象创建时间
        //employee.setCreateTime(LocalDateTime.now());
        // 设置对象更新时间
        //employee.setUpdateTime(LocalDateTime.now());
        // 获取操作人的id
        Long empId = (Long) request.getSession().getAttribute("employee");
        // 设置操作人的id
        //employee.setCreateUser(empId);
        // 设置操作人
        //employee.setUpdateUser(empId);

        employeeService.save(employee);
        return R.success("新增员工成功!");
    }

    @GetMapping("/page")
    /**
     * 员工信息的分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */ public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {}, name = {}", page, pageSize, name);
        // 构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        // 构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        // 添加过滤条件, 客户端传入的name属性不为空的情况下才会执行下面sql查询
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        // 执行查询
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }


    @PutMapping
    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    public R<String> update(HttpServletRequest req, @RequestBody Employee employee) {
        log.info(employee.toString());

        //employee.setUpdateTime(LocalDateTime.now());
        //Long empId = (Long) req.getSession().getAttribute("employee");
        //employee.setUpdateUser(empId);

        long id = Thread.currentThread().getId();
        log.info("线程ID为: {}", id);

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据ID查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")  // 接收路径参数
    public R<Employee> getById (@PathVariable Long id) {
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }
}
